Load Specifications
Load data in caliber .300 Blaser Mag. with .308 | 180gr | Nosler Solid Base bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 55,085 psi | 90% | 2844 fps | 99.3% |
| Accurate 3100 | <<locked>> | 98% | 53,867 psi | 88% | 2900 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 54,752 psi | 90% | 2828 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 52,228 psi | 86% | 2890 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,911 psi | 90% | 3048 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 96% | 52,199 psi | 86% | 2986 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 54,491 psi | 89% | 2861 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 52,895 psi | 87% | 2936 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 98% | 54,273 psi | 89% | 2992 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,362 psi | 61% | 2703 fps | 96.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,098 psi | 87% | 2933 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,185 psi | 86% | 2835 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 52,924 psi | 87% | 2946 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 53,896 psi | 88% | 2963 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 52,431 psi | 86% | 2923 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 53,534 psi | 88% | 2989 fps | 98.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,085 psi | 89% | 2966 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,978 psi | 77% | 2904 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 54,259 psi | 89% | 3054 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,504 psi | 86% | 2969 fps | 98.6% |
| Bofors RP3 | <<locked>> | 82% | 52,924 psi | 87% | 2851 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 42,830 psi | 70% | 2825 fps | 95.9% |
| Bofors RP5 | <<locked>> | 98% | 53,534 psi | 88% | 2989 fps | 98.9% |
| Bofors RP7 | <<locked>> | 86% | 52,243 psi | 86% | 2838 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,412 psi | 76% | 2841 fps | 96.9% |
| Hodgdon H380 | <<locked>> | 82% | 53,200 psi | 87% | 2867 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 54,114 psi | 89% | 2943 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 53,882 psi | 88% | 2904 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 96% | 54,317 psi | 89% | 2933 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,113 psi | 87% | 2910 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,214 psi | 87% | 2867 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,948 psi | 75% | 2946 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 88% | 54,128 psi | 89% | 2979 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,550 psi | 60% | 1804 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,099 psi | 89% | 2844 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 53,330 psi | 88% | 2874 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,911 psi | 89% | 2867 fps | 99.5% |
| IMR 4831 | <<locked>> | 90% | 52,576 psi | 86% | 2881 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,402 psi | 86% | 2864 fps | 97% |
| IMR 7828 SSC | <<locked>> | 98% | 51,793 psi | 85% | 2963 fps | 97.5% |
| Lovex S062 | <<locked>> | 82% | 54,302 psi | 89% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,056 psi | 89% | 2861 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 51,996 psi | 85% | 2851 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,964 psi | 79% | 2808 fps | 99.5% |
| Norma 203B | <<locked>> | 82% | 54,969 psi | 90% | 2890 fps | 100% |
| Norma 204 | <<locked>> | 90% | 53,925 psi | 89% | 2927 fps | 98.6% |
| Norma MRP | <<locked>> | 96% | 52,982 psi | 87% | 3012 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 54,259 psi | 89% | 2927 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 52,185 psi | 86% | 2979 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 53,098 psi | 87% | 2930 fps | 99.9% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,082 psi | 82% | 2913 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,275 psi | 61% | 1847 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 52,924 psi | 87% | 2851 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,563 psi | 88% | 2956 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,025 psi | 85% | 2913 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,056 psi | 89% | 2999 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,093 psi | 76% | 2943 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 84% | 53,026 psi | 87% | 2848 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 54,563 psi | 90% | 2904 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 94% | 51,779 psi | 85% | 2910 fps | 98.6% |
| Rottweil R 907 | <<locked>> | 86% | 52,243 psi | 86% | 2838 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,056 psi | 89% | 2861 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 54,302 psi | 89% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 51,996 psi | 85% | 2851 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,491 psi | 89% | 2907 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,679 psi | 88% | 2726 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,548 psi | 88% | 2815 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,810 psi | 90% | 2963 fps | 99% |
| Somchem S355 | <<locked>> | 84% | 52,939 psi | 87% | 2841 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,750 psi | 87% | 2841 fps | 96.8% |
| Somchem S365 | <<locked>> | 92% | 53,911 psi | 89% | 2930 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,388 psi | 86% | 2887 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 86% | 54,128 psi | 89% | 2815 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 52,910 psi | 87% | 2871 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 51,764 psi | 85% | 2864 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 82% | 55,071 psi | 90% | 2818 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 51,996 psi | 85% | 2874 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 53,127 psi | 87% | 2940 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,214 psi | 87% | 2999 fps | 97.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 48,979 psi | 80% | 2910 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,330 psi | 86% | 2835 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 54,360 psi | 89% | 2946 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,980 psi | 82% | 3041 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 52,228 psi | 86% | 2881 fps | 98.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 80% | 51,590 psi | 85% | 2789 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 31,270 psi | 51% | 2457 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 51,590 psi | 85% | 2779 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,668 psi | 65% | 2667 fps | 99.3% |
| Accurate High Country | <<locked>> | 88% | 41,611 psi | 68% | 2799 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 94% | 48,457 psi | 80% | 2920 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 48,283 psi | 79% | 2759 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 40,799 psi | 67% | 2703 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 92% | 44,425 psi | 73% | 2808 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 98% | 35,099 psi | 58% | 2644 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 38,363 psi | 63% | 2644 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,008 psi | 80% | 2785 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,363 psi | 63% | 2674 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,772 psi | 72% | 2799 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 40,495 psi | 66% | 2697 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,305 psi | 63% | 2694 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,326 psi | 47% | 2434 fps | 97.8% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,081 psi | 49% | 2500 fps | 95.3% |
| Alliant Reloder-26 | 65.4 gr | 80% | 30,211 psi | 50% | 2546 fps | 96.4% |
| Bofors RP15 | <<locked>> | 92% | 40,480 psi | 66% | 2740 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 49,414 psi | 81% | 2795 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,118 psi | 66% | 2762 fps | 95% |
| Bofors RP5 | <<locked>> | 88% | 38,305 psi | 63% | 2694 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 43,439 psi | 71% | 2677 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 96% | 40,727 psi | 67% | 2720 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 49,748 psi | 82% | 2812 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 41,539 psi | 68% | 2713 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 44,251 psi | 73% | 2730 fps | 97.1% |
| Hodgdon H4831 | <<locked>> | 92% | 47,442 psi | 78% | 2812 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,601 psi | 77% | 2795 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,955 psi | 59% | 2562 fps | 99.6% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,826 psi | 62% | 2753 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 40,437 psi | 66% | 2726 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,369 psi | 45% | 1614 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,763 psi | 83% | 2792 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 38,870 psi | 64% | 2602 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,802 psi | 74% | 2707 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 38,029 psi | 62% | 2618 fps | 99.1% |
| IMR 4955 Enduron | <<locked>> | 90% | 46,296 psi | 76% | 2753 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 94% | 45,237 psi | 74% | 2838 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 51,024 psi | 84% | 2785 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,351 psi | 70% | 2654 fps | 98.8% |
| Lovex S070 | <<locked>> | 80% | 40,509 psi | 67% | 2638 fps | 97.6% |
| Lovex S071 | <<locked>> | 86% | 30,589 psi | 50% | 2438 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 51,648 psi | 85% | 2841 fps | 100% |
| Norma 204 | <<locked>> | 82% | 41,089 psi | 67% | 2687 fps | 95.7% |
| Norma MRP | 66.7 gr | 84% | 34,983 psi | 57% | 2641 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 39,247 psi | 64% | 2654 fps | 99.1% |
| Ramshot Grand | <<locked>> | 92% | 42,018 psi | 69% | 2782 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 38,159 psi | 63% | 2648 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 92% | 37,478 psi | 62% | 2661 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,905 psi | 46% | 1654 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,574 psi | 81% | 2795 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,485 psi | 76% | 2848 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,421 psi | 65% | 2684 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,145 psi | 63% | 2697 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,737 psi | 57% | 2667 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 46,572 psi | 76% | 2743 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,293 psi | 69% | 2680 fps | 95% |
| Rottweil R 905 | <<locked>> | 86% | 39,639 psi | 65% | 2680 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 43,439 psi | 71% | 2677 fps | 97.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,351 psi | 70% | 2654 fps | 98.8% |
| Shooters World Precision | <<locked>> | 80% | 51,024 psi | 84% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,509 psi | 67% | 2638 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,863 psi | 79% | 2802 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,630 psi | 78% | 2638 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,336 psi | 68% | 2598 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 39,276 psi | 64% | 2674 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 46,891 psi | 77% | 2743 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,122 psi | 76% | 2726 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 35,723 psi | 59% | 2612 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,404 psi | 58% | 2552 fps | 95.2% |
| Vihtavuori N150 | <<locked>> | 80% | 44,686 psi | 73% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,698 psi | 67% | 2654 fps | 99.3% |
| Vihtavuori N165 | <<locked>> | 88% | 37,260 psi | 61% | 2589 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 51,605 psi | 85% | 2766 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,103 psi | 66% | 2657 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 31,386 psi | 52% | 2510 fps | 97.8% |
| Vihtavuori N560 | 73.1 gr | 92% | 46,572 psi | 76% | 2881 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 98% | 45,687 psi | 75% | 2851 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,653 psi | 65% | 2621 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,539 psi | 68% | 2713 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,019 psi | 41% | 2415 fps | 97.1% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,624 psi | 65% | 2644 fps | 95.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 84 powders for .300 Blaser Mag. loaded with the .308 | 180gr | Nosler Solid Base. Alliant Reloder-26 delivers the highest muzzle velocity at 3,054 fps; across all powders the maximum-charge window runs from 1,804 fps to 3,054 fps. ADI AR 2225 gives the best case fill at 100 %, and 84 of the 84 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, Alliant Reloder-25 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .300 Blaser Mag. with the .308 | 180gr | Nosler Solid Base they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.